812508036 has 12 divisors (see below), whose sum is σ = 1895852112. Its totient is φ = 270836008.

The previous prime is 812508023. The next prime is 812508041. The reversal of 812508036 is 630805218.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 812507988 and 812508006.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33854490 + ... + 33854513.

It is an arithmetic number, because the mean of its divisors is an integer number (157987676).

Almost surely, 2^812508036 is an apocalyptic number.

It is an amenable number.

812508036 is an abundant number, since it is smaller than the sum of its proper divisors (1083344076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

812508036 is a wasteful number, since it uses less digits than its factorization.

812508036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67709010 (or 67709008 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 812508036 is about 28504.5265878948. The cubic root of 812508036 is about 933.1308655490.

The spelling of 812508036 in words is "eight hundred twelve million, five hundred eight thousand, thirty-six".